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Cognitive Radio (CR) is a new paradigm that enable nodes to exploit unoccupied frequency spectrum for transmissions. Cognitive Radio Networks (CRNs) have been proposed to enable wireless mesh networks to communicate via dynamic channels. Many existing research consider routing in static CRNs with relatively stable communication channel where the duration of the availability of the communication channel...
Security decides whether Ad hoc network can be fully utilized. Since Ad hoc network isn't dependent on fixed infrastructure, its secure architecture is facing new challenges, and the security of its routing protocol is a very important issue. This paper first introduces the design of the secure routing protocol and its security weaknesses, then proposes an improved secure routing protocol and presents...
IEEE 802.11s defines a new mesh data frame format and an extensibility framework for routing. The default routing protocol Hybrid Wireless Mesh Protocol (HWMP) is described. HWMP is based on Ad hoc On-demand Distance Vector Routing (AODV) and has a configurable extension for proactive routing. It uses MAC address with layer 2 routing and uses Radio-Aware as routing metric. We implemented HWMP on OPNET...
Multi-hop wireless mesh networks (M-WMNs) have recently emerged as an alternative network infrastructure. For M-WMNs to serve as a network infrastructure, the protocol designs for M-WMNs should target a high network capacity. An efficient backoff algorithm is required to achieve a high network capacity. Most of existing works focused on backoff algorithms for infrastructure environment based on IEEE...
Wireless Mesh Networks (WMNs) are dynamically self-organized and self-configured, with the nodes in the network automatically establishing an ad hoc network and preserving the mesh connectivity. There are several features which might help to design an efficient routing protocol suitable for wireless mesh networks such as improved performance metrics, link or path optimization, mobility management,...
Wireless Mesh Network (WMN) is an emerging technology that has developed a lot these years. WMN has the feather of self-organization, distributed structure. The main topological characteristic of WMN is that there are only one or several node connecting to the infrastructure network as gateway and all other nodes connect to the gateway through the relay of the neighboring nodes, and then connect with...
Wireless mesh networks (WMNs) have recently gained a lot of popularity due to their rapid deployment and instant communication capabilities. WMNs are dynamically self-organized, self-configured and self-healed, with the nodes in the network automatically establishing an ad hoc network and preserving the mesh connectivity. Due to the increasing interest on wireless mesh architectures, a new IEEE working...
Network coding has been considered as an effective strategy for improving the performance of wireless mesh networks (WMNs) by encoding multiple packets into a single transmission. Existing work shows that integration of network coding and routing at the network layer can achieve good performance in terms of network throughput and packet delay. In this paper, we propose a rate-adaptive coding-aware...
Low-cost wireless routers are changing the way people connect to the Internet. They are also very cheap, albeit quite limited, Linux boxes. These attributes make them ideal candidates for wireless mesh routers. This paper presents a minimally invasive mechanism for redundant multipath routing in kernel-space to achieve high reliability with high throughput in a mesh network. This service is essential...
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